Question

Problem 1. HW PROBLEM 4 Chapter 5. (HW SET5) For the circuit below, what resistor connected across terminals a-b will absorb maximum power from the circuit? What is that power? 10 kS2 o a CT 120: 40 kΩ 1.c o b

Answer 1

Calculation of v_th - Apply open circuit voltage across terminal a and b using voltage dander left side V_0 = delta L/1 + 3 = 2v u_0 = 2v using voltage donor at right side V_th = -120 mu_0 40/40 + 10 = -120 times 2 times 2 40/50 = -192 v v_th = -192 v \r\n calculation of R_th - just disable independent source and apply a source at a - b terminal because it is a voltage dependent source circuit use KVL: left side - then mu_0 = 0 therefore ckt because look like using kcl at right side I_X = 1/40 + 1/10 = 5/40 = 1/Q R_th = 1V/Ix = 1/1/theta = theta k omega R_th = delta k omega thernin's theorem \r\n According to maximum power transform theorem R_ab = R_th R-ab = theta k omega mis much of load have to connect across a - b terminal maximum power across not load can be written as p_max = v_th/4 R^th